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The Pharo project announced Pharo 14 on Oct. 26, 2026, highlighting changes to its development tools, refactoring and command infrastructure, and virtual machine. The release incorporates 978 pull requests and closes 616 issues since Pharo 13; it is also the first release under a new fall schedule.
The Pharo project released Pharo 14 on Oct. 26, 2026, introducing changes to its development tools, refactoring and command infrastructure, and virtual machine. The release also marks a shift in the project’s schedule from spring to fall, making Pharo 14 the first version issued under the new September-to-November window, according to the project’s announcement.
On the developer-tools side, Pharo 14 introduces Mission Control and Pulse, which replaces Spotter, and reworks the Method Browser. The Settings Browser has been rewritten, while Epicea and ProfStef have been moved into NewTools. The project says this work continues its migration toward a Spec-based tooling stack. Other listed work includes improvements to the File Browser, Finder, Transcript, code editor, lists, trees, filtering, dialogs and window behavior.
The release also changes how developers access refactoring and commands. Refactoring commands have moved to a driver-based architecture behind a unified command registry. The announcement lists command-line testing, a command-line debugger and Sindarin script tooling among the expanded command-line features. It also reports work on scoped extensions, selector semantics, compiler APIs, method installation and debugger behavior.
Pharo 14 includes a substantial set of virtual-machine changes. The team reports unified frames and stack management, RISC-V JIT support, direct old-space allocation and garbage-collection improvements. It also cites work on Slang and C compilation, cross-platform builds, CI, SDL and third-party dependencies, alongside broad cleanup across the VM and interpreter. The announcement counts 978 pull requests integrated in the Pharo repository and 616 issues closed since Pharo 13.
New Tools and VM Capabilities
For developers using Pharo, the update affects both everyday work inside the environment and the underlying runtime. A reworked browser and new tool organization may change how users find and use development features, while command-line testing and debugging extend work beyond the interactive environment. The project describes Pharo as a live development environment, but the release announcement does not provide independent performance measurements or user adoption data.
The VM updates matter to teams concerned with platform support and runtime development. RISC-V JIT support expands the VM’s stated architecture coverage, while memory-management and compiler changes affect core infrastructure. The announcement describes these as capabilities and engineering work; it does not quantify speed gains, compatibility outcomes or production impact. Readers evaluating an upgrade should consult release documentation and test their own applications.
The schedule change also gives users and maintainers a new planning point. Instead of a spring release window, Pharo now targets September through November. That may affect upgrade and contribution planning, although the announcement does not provide a fixed date for future releases or a detailed release calendar.
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A Shift From Spring Releases
Pharo is an open-source, object-oriented programming language and development environment. The project describes its approach as centered on objects and messages, with an interactive environment for developing, testing and debugging. It says the full stack is available under the MIT License and on GitHub.
Pharo 14 follows Pharo 13 and continues work on the project’s development tools and VM. The release announcement identifies three broad areas of effort: modernizing tools, rebuilding refactoring and command infrastructure, and updating the virtual machine. It also notes contributions in related projects, including Spec, NewTools, Iceberg, Roassal, Microdown and Pharo VM.
The project reports 432 GitHub forks and 1,494 stars in the release announcement. Those figures are the counts given by the source, not a measure of active users or a comparison with an earlier date. The announcement refers to more than “[X] contributors” for the latest revision, leaving that contributor total unspecified.
““In this iteration of Pharo, our efforts have concentrated on three main areas: Modernizing the development tools. Rebuilding the refactoring and command infrastructure. Modernizing the virtual machine.””
— The Pharo Team
Upgrade Effects Still Unmeasured
The release announcement does not give benchmarks for the VM changes, explain how much RISC-V JIT support covers, or quantify how the updates affect application performance. It also does not specify compatibility requirements, upgrade steps, or whether users need to change existing projects to work with the revised tools and infrastructure. Those details should be checked in the release documentation before deployment.
The source does not provide a completed contributor count: its wording includes the placeholder “[X].” The reported 978 pull requests and 616 closed issues are specific to the Pharo repository and the period since Pharo 13; the announcement does not give corresponding totals for the separate projects included with the release. It also does not set an exact date for Pharo 15.
Testing and the Fall Schedule
Users can obtain Pharo through the project’s download page and review its documentation and feature information, as linked in the announcement. Developers considering the update can assess the changed tools and runtime against their own workflows and applications. The project has not specified a later Pharo 14 maintenance schedule in the release notice.
Future releases are expected to follow the stated September-to-November window, but the team has not published an exact date for the next version in the material provided. Further information about compatibility, performance and the scope of the VM changes may become clearer through release documentation, project discussions and users’ testing.
Key Questions
When was Pharo 14 released?
The Pharo project announced the release on Oct. 26, 2026.
What are the main changes in Pharo 14?
The project highlights updated development tools, a unified command registry and expanded command-line features, plus VM work including RISC-V JIT support, frame and stack changes, and memory-management updates.
What release schedule will Pharo use now?
The project says it has moved from a spring window of March–May to a fall window of September–November. Pharo 14 is the first release under that schedule.
How much work went into the Pharo 14 repository?
The announcement reports 978 pull requests integrated in the Pharo repository and 616 issues closed since Pharo 13. These figures do not include a stated combined total across the separate projects bundled with the release.
Does the announcement report performance improvements?
It describes VM and memory-management changes but gives no benchmark results or quantified performance gains. Users should test their own applications and consult the release documentation for upgrade details.
Source: pharo.org
